相关实验视频
Updated: Jul 15, 2025

11:12
Controlling Parkinson's Disease With Adaptive Deep Brain Stimulation
Published on: July 16, 2014
22.5K
基于CAR-fuzzy控制算法的模型帕金森期β振荡的闭环调制
Fei Su1, Hong Wang1, Linlu Zu1
1School of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian, 271018 China.
Cognitive neurodynamics
|October 3, 2023
概括
这项研究引入了一种新的闭环深度大脑刺激 (DBS) 方法,使用CAR-fuzzy算法. 它有效地降低了刺激频率,同时保持了对病理性脑振荡的治疗性能.
科学领域:
- 神经科学是一个神经科学.
- 生物医学工程 生物医学工程
- 控制系统 控制系统
背景情况:
- 开放循环深度大脑刺激 (DBS) 在临床上使用,但可能会引起副作用.
- 闭环DBS提供基于反的按需刺激,可能减少副作用.
- 临床应用需要解决状态变化,例如改变所需信号和模型参数.
研究的目的:
- 提出基于模型的闭环DBS算法来调节病态β振荡.
- 在基底 - 皮质 - thalamus模型中研究受控自回归 (CAR) - 模糊控制算法的有效性.
- 将拟议的CAR模糊闭环DBS与开环DBS和其他控制方法进行比较.
主要方法:
- 利用基底 - 皮质 - 脑垂体模型来模拟病态β频段振荡 (13-35 Hz).
- 采用受控自回归 (CAR) 模型来确定DBS频率与β振荡功率之间的关系.
- 集成了一个Mamdani模糊控制器,使用CAR模型的预测错误作为输入来调整刺激频率.
- 整合了一个预测模块,以提高模糊控制的准确性.
主要成果:
- 与130Hz的开环DBS相比,CAR模糊闭环DBS将平均刺激频率降低到74.04Hz.
- 用闭环方法实现了类似的β振荡抑制性能.
- 该CAR模糊控制算法表现出优越的跟踪可靠性,响应速度和稳定性,相比比例积分和标准模糊控制.
结论:
- 拟议的CAR模糊闭环DBS是一种有效的策略,用于调节病态大脑振荡.
- 这种方法为开环DBS提供了一个有希望的替代方案,可能减少刺激能量和副作用.
- 预测模块的集成提高了神经调制中闭环控制系统的性能和稳定性.
相关概念视频
Open and closed-loop control systems
785
Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
785
PD Controller: Design
272
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
272
Time-Domain Interpretation of PD Control
136
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
Consider the example of control of motor torque. Initially, a positive...
136
Root-Locus Method
172
A cruise control system in a car is designed to maintain a specified speed automatically by adjusting the gas pedal. The system continuously measures the vehicle's speed and makes fine adjustments to the pedal to achieve this goal. The root locus method is particularly useful for understanding how the cruise control system's behavior changes under varying conditions, such as when the car goes uphill, downhill, or faces strong wind resistance.
This system can be represented by a block...
This system can be represented by a block...
172
Feedback control systems
332
Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
332
Frequency-Domain Interpretation of PD Control
130
Proportional-Derivative (PD) controllers are widely used in fan control systems to improve stability and performance. A fan control system can be effectively represented using a Bode plot to illustrate the impact of a PD controller through its transfer function. The Bode plot visually conveys how PD control modifies the fan's response across various frequencies, providing a frequency domain interpretation of the controller's behavior.
The proportional control gain, combined with the...
The proportional control gain, combined with the...
130

